Labradorite and Dallasite Physical Properties

Labradorite

Dallasite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.72

2.58-2.91

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Not Available

1.6 Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Not Available

1.7 Mohs Hardness

6-6.5

6.5-7

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Not Available

Labradorite and Dallasite Chemical Formula

While comparing Labradorite and Dallasite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Labradorite and Dallasite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Labradorite and Dallasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Dallasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Dallasite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 2.58-2.91 whereas that of Dallasite is 2.58-2.91.